Question: What is the synonym with the highest gestation period whose instance of is synonym?
Paraphrase: Which synonym has the highest gestation period whose instance is a synonym?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q1040689 . ?ent wdt:P3063 ?obj . ?ent wdt:P31 wd:Q1040689 } ORDER BY DESC(?obj)LIMIT 5 
Answer: Equus caballus, Bos grunniens, Panthera uncia